[Ethernet[ Fix crashes when using Ethernet + IPv6 on LittleFS builds

platformio.ini

@@ -28,7 +28,7 @@ extra_configs =
   platformio_esp32c6_envs.ini
 
 ;default_envs = normal_ESP32_4M
-default_envs = max_ESP32_16M8M_LittleFS
+default_envs = normal_ESP32c6_4M316k_LittleFS_CDC
 ; default_envs = custom_ESP8266_4M1M
 
 ;default_envs = normal_ESP8266_4M1M

platformio_core_defs.ini

@@ -216,14 +216,14 @@ lib_ignore =
 ; Build with HWCDC fix.
 platform                    = https://github.com/Jason2866/platform-espressif32.git
 ;platform_packages           = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/2221/framework-arduinoespressif32-all-release_v5.1-ec01775.zip
-platform_packages           = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/2257/framework-arduinoespressif32-all-release_v5.1-11140aa.zip
+platform_packages           = framework-arduinoespressif32 @ https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/2261/framework-arduinoespressif32-all-release_v5.1-11140aa.zip
 build_flags                 = -DESP32_STAGE
                               -DESP_IDF_VERSION_MAJOR=5
                               -DLIBRARIES_NO_LOG=1
                               -DDISABLE_SC16IS752_SPI
                               -DCONFIG_PM_ENABLE
 ;                              -DCONFIG_LWIP_L2_TO_L3_COPY
-                              -DETH_SPI_SUPPORTS_NO_IRQ=1
+;                              -DETH_SPI_SUPPORTS_NO_IRQ=1
                               -DCONFIG_FREERTOS_USE_TICKLESS_IDLE=1
                               -DCONFIG_FREERTOS_IDLE_TIME_BEFORE_SLEEP=3
                               -DNEOPIXEL_ESP32_RMT_DEFAULT

src/src/DataStructs/EthernetEventData.cpp

@@ -184,6 +184,7 @@ void EthernetEventData_t::markConnected() {
 #if FEATURE_USE_IPV6
   ETH.enableIPv6(true);
   // workaround for the race condition in LWIP, see https://github.com/espressif/arduino-esp32/pull/9016#discussion_r1451774885
+  /*
   {
     uint32_t i = 5;   // try 5 times only
     while (esp_netif_create_ip6_linklocal(get_esp_interface_netif(ESP_IF_ETH)) != ESP_OK) {
@@ -194,6 +195,7 @@ void EthernetEventData_t::markConnected() {
       }
     }
   }
+  */
 #endif
 }
 

src/src/Helpers/Hardware.cpp

@@ -114,6 +114,10 @@
 
 # include "../Helpers/Hardware_ADC_cali.h"
 
+#if FEATURE_ETHERNET
+#include <ETH.h>
+#endif
+
 #endif // ifdef ESP32